Racerstar 2838 Sensorless Motor 3600\/4500KV 35A ESC For 1\/12 1\/14 CarsDescription:Motor  Features:- 4 pole 12 slot hi-torque motor design- CNC machined 6061 T6 billet aluminum heatsink can- High purity copper windings maximizes efficiency- High RPM ABEC 5 oversized bearings- Universal fit、 fits all 1\/16、 1\/18 brushless cars; multi-mounting system for M2.5 screws- Precision balanced rotor、 smoothness for best reliability and maxium RPMMotor Specification:          Product       Watts       Max Voltage       Max Amps       Rotor Poles         IO       Resistance       KV    (RPM\/Volt6)       Max RPM       Length       Diameters       Weight    (g)       Shaft    (mm)       Length of Extend Shaft       Connector           2838\/3.5Y       600       12V       50A       4       1.8A       0.0285       4500       50000       38mm       28mm       95       \uffe03.175       15mm       3.5mm gold           2430\/4.5Y       600       14V       43A       4       1.4A       0.0415       3600       50000       38mm       28mm       95       \uffe03.175       15mm       3.5mm gold   ESC Features:- Specially desighed for RC car with excellent start-up、 acceleration and linearity feartures- Compatible with sensorless brushless motor- The strong resistant current capability、 excellent heat dissipation- Multiple protection features:  low voltage cut-off protection for lithium or nickel battery \/ over-heat protection \/ throtttle signal loss protection \/ motor blocked protection- Easily programmed and compatible with pocket-sized program cardESC Specifications:          Model       25A       35A       45A       60A       80A       120A           Cont. Current\/    Burst Current       25A\/100A       35A\/120A       45A\/180A       60A\/320A       80A\/480A       120A\/600A           Motor Type                                                    Sensorless Brushless Motor           Suitable  Car       1\/18、 1\/16       1\/18、 1\/16、 1\/14       1\/10       1\/10       1\/8       1\/8           Suitable Brushless Motor       ≥12T       ≥12T       ≥9T       ≥9T       ≥5.5T       ≥3.5T           Resistance       0.004ohm       0.003ohm       0.0014ohm       0.0007ohm       0.0005ohm       0.00035ohm           Battery       2 cells Lipo    4-6 cells NiMH       2-3 cells Lipo    4-9 cells NiMH       2-3 cells Lipo    4-9 cells NiMH       2-3 cells Lipo    4-9 cells NiMH       2-4 cells Lipo    4-12 cells NiMH       2-6 cells Lipo    4-18 cells NiMH           BEC Output       5V\/2A    (analog mode)       5V\/2A    (analog mode)       5.8V\/3A    (switch mode)       5.8V\/3A    (switch mode)       6.1V\/3A    (switch mode)       6.1V\/3A    (switch mode)           Dimension